Idioms
Idioms are phrases which cannot be understood simply by looking at the meaning of the individual words in the phrase.
Idiom:
have (something) up one's sleeve
Meaning:
to have something kept secretly ready for a good time to use it
Example:
I am not too worried about the meeting as I have something up my sleeve if there are any problems.
List of common idioms, their meanings and examples of their usage in sentences
An idiom is a group of words, or in other words, a phrase that has a meaning other than its literal meaning of the words in it.